/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.isis.core.commons.authentication;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.google.common.collect.Lists;
public class MessageBroker implements Serializable {
private static final long serialVersionUID = 1L;
//region > constructor, fields
private final List<String> messages = Lists.newArrayList();
private final List<String> warnings = Lists.newArrayList();
private String applicationError;
public MessageBroker() {
}
//endregion
//region > reset
public void reset() {
warnings.clear();
messages.clear();
applicationError = null;
}
//endregion
//region > messages
public List<String> getMessages() {
return copyAndClear(messages);
}
public void addMessage(final String message) {
messages.add(message);
}
//endregion
//region > warnings
public List<String> getWarnings() {
return copyAndClear(warnings);
}
public void addWarning(final String message) {
warnings.add(message);
}
//endregion
//region > applicationError
public String getApplicationError() {
final String error = applicationError;
setApplicationError(null);
return error;
}
public void setApplicationError(String applicationError) {
this.applicationError = applicationError;
}
//endregion
//region > helpers
private List<String> copyAndClear(final List<String> messages) {
final List<String> copy = Collections.unmodifiableList(new ArrayList<>(messages));
messages.clear();
return copy;
}
//endregion
}